Among many face shapes, the oval face is the most beautiful one. On the whole, the upper part of the melon face is slightly round and the lower part is slightly sharp, which looks like melon seeds. The mandibular angle of melon seed face is narrow, and the mandibular angle is round.

However, the mandibular angle of the square face has obvious folding angle and expands outward. Looking at the whole face from the front gives people a feeling of indifference.

At present, mandibular angle plastic surgery can effectively solve the square face. Part of the mandible was removed through an intraoral incision, which made the mandibular angle smooth.